scholarly journals Studying the properties of constructed wetland sediments for their possible application as fertilizers

2007 ◽  
pp. 167-179
Author(s):  
Yuriy Vergeles ◽  
Nataliya Butenko ◽  
Andriy Ishchenko ◽  
Lidiya Svirenko ◽  
Felix Stolberg ◽  
...  
Keyword(s):  
Constructed Wetland ◽  
Typha Latifolia ◽  
Surface Flow ◽  
Treated Wastewater ◽  
Septic Tank ◽  
Wetland Soil ◽  
Pathogenic Microorganisms ◽  
Artificial Lake ◽  
Wetland Site ◽  
Sediment Formation

The processes of sediment formation and their biogeochemical properties were studied in2005-2007 at the experimental constructed wetland site ("Bioplato") designed for treatment ofdomestic effluents in Ukraine, nearby the city of Kharkiv. The constructed wetland consists ofthree units: one with vertical filtration applying fine gravel (0.5 m in depth) and coarse sand(0.3 111) as filtering media, one with horizontal filtration applying middle sand (0,8 m) as afiltering medium, and one surface flow unit with natural wetland soil applied, The site alsoincludes a septic tank and a small sludge-drying field. The constructed wetland with acapacity of 50 1113 of treated domestic wastewater per day was established in 1998 and sincethen it has been operated continuously until now. Macrophytes were planted in I 998-200 I,and recently the reed (Phragmites australis), cattail (Typha latifolia), and a number of sedgespecies (Carex Jpp.) dominate over the rest of ca. 30 plant species with average cover of 85-90%. Treatment efficiency of 90-95% of BOD5 and suspended solids removal, as well as 98-99% of removal of pathogenic microorganisms allows discharging the treated wastewater intoadjacent artificial lake, Sludge was sampled at each unit followed with standard laboratoryanalyses of its main characteristics: total organic carbon (TOC), total nutrients (N, P),contents of trace elements, abundance of pathogenic microorganisms, and general toxicity.The results of analyses confirmed that the top layer of sludge from each unit of the assessedconstructed wetland site could be used as a source of fertilizers for grain and leguminouscrops.

Water quantity and quality assessment on a tertiary treatment wetland in a tropical climate

2014 ◽  
Vol 71 (4) ◽  
pp. 511-517 ◽  
Author(s):  
Guangzhi Sun ◽  
Tanveer Saeed ◽  
Guangxin Zhang ◽  
Nagaratnam Sivakugan
Keyword(s):  
Oxygen Demand ◽  
Field Testing ◽  
Tropical Climate ◽  
Surface Flow ◽  
Quality Analysis ◽  
Treated Wastewater ◽  
Wetland Soil ◽  
Tertiary Treatment ◽  
Wet Season ◽  
Treatment Wetland

This study aimed to assess the quantity and quality of water in a surface flow constructed wetland in Australia's far north Queensland. Owing to tropical climate in the region, the wetland provided dual functions: retention of a treated wastewater for zero discharge during the dry season and tertiary treatment prior to discharge during the wet season. Rainfall data, permeability of wetland soil, evaporation, inflow and outflow were analysed in a water balance analysis; the results showed that based on a 72-year-average rainfall pattern, daily wastewater inflow of 85 m3/d is the maximum this wetland can cope with without breaching its discharge certificate. In water quality analysis, the K-C* model was used to predict changes of biochemical oxygen demand (BOD, suspended solids (SS), total nitrogen (TN), total phosphorus (TP) and faecal coliforms (FC) in the wetland. Model predictions were compared with field sampling results. It was found that the wetland was effective in removing FC (>99.9%), TN (70.7%) and TP (68.2%), for which the predictions by the K-C* model were consistent with field testing results. However, significant disparities between the predictions and testing results were found for BOD and SS. A revised K-C* equation was proposed to account for the internal generation of organics in constructed wetlands with a long retention time.

Domestic wastewater treatment through constructed wetland in India

1995 ◽  
Vol 32 (3) ◽  
pp. 291-294 ◽  
Author(s):  
A. S. Juwarkar ◽  
B. Oke ◽  
A. Juwarkar ◽  
S. M. Patnaik
Keyword(s):  
Constructed Wetland ◽  
Low Cost ◽  
Typha Latifolia ◽  
Domestic Wastewater ◽  
Treated Wastewater ◽  
Wastewater Management ◽  
Domestic Wastewater Treatment ◽  
Viable Solution ◽  
Wetland Treatment ◽  
The Mean

The paper highlights the use of constructed wetlands for the removal of BOD, nitrogen, phosphorus and pathogens from primary treated wastewater. The constructed wetland consists of emergent macrophytesTypha latifolia and Phragmites carca grown in cement pipes having 0.1256 m2 area and 0.8 meter deep filled with 30% soil and 70% sand. The hydraulic loadings were maintained at the rate of 5 cm per day. The BOD removal in wetlands was observed to be 78-91%. The nitrogen content reduced from 30.8 mgl−1 to 9.5 mgl−1 whereas phosphate in treated wetland effluent was 9.6 mgl−1 as against the mean inflow total phosphate content of 14.9 mgl−1. The country’s first constructed wetland, of 90m × 30m size, was installed at Sainik School, Bhubaneshwar in the State of Orissa. Two types of macrophytes, viz. Typha latifolia and Phragmites carca, were planted. At present 180-200 m3 wastewater is being treated through wetland. BOD and nitrogen removal were 67-90% and 58-63% respectively. The constructed wetland treatment was found to be efficient in removal of BOD and N, and economically viable. The system, being easy to operate and low cost, can provide an economical viable solution for wastewater management.

scholarly journals The use of subsurface constructed wetland for the treatment of tofu industrial wastewater in Semanan, Jakarta Barat

2021 ◽  
Vol 894 (1) ◽  
pp. 012015
Author(s):  
M R Raivaldi ◽  
R Hadisoebroto ◽  
D I Hendrawan
Keyword(s):  
Constructed Wetland ◽  
Industrial Wastewater ◽  
Water Contamination ◽  
Typha Latifolia ◽  
Surface Flow ◽  
Green Technologies ◽  
Edge Quality ◽  
The Media ◽  
Sand And Gravel

Abstract The tofu preparing industry, typically done by the little businesses, can be found in almost every city in Indonesia and is dominated by industrial house stairways. The largest industry does not have a unit of processing wastewater. The wastewater focus is as yet over the edge quality norm, which messed contamination up. Constructed wetlands are affordable and reliable green technologies to diminish water contamination by utilizing plants. This study aims to know the quality of tofu industrial wastewater in Semanan, Jakarta Barat and analyze the removal of pollutants. The performance of the horizontal flow type Sub-Surface Flow constructed wetland with Typha latifolia plant. The media used were soil, sand, and gravel with a Typha latifolia plant. Testing the quality of tofu wastewater in Constructed wetland every 7 days at inlet and outlet, the sample was taken for TSS, BOD, and COD concentration. This research showed that the reactor could decrease TSS by 91.17% on day 36, a decrease of BOD 89.30% on day 15, and COD 87.86% on day 36. Those plants can produce growth fertile. These results fulfil the requirement of the quality standards of the Decree of the Minister of Environment No. 05 of 2014.

scholarly journals Performance of horizontal flow constructed wetland for secondary treatment of domestic wastewater in a remote tribal area of Central India

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Reetika Shukla ◽  
Deepak Gupta ◽  
Gurudatta Singh ◽  
Virendra Kumar Mishra
Keyword(s):  
Constructed Wetland ◽  
Typha Latifolia ◽  
Oxygen Demand ◽  
Central India ◽  
Domestic Wastewater ◽  
Quality Parameters ◽  
Surface Flow ◽  
Fecal Coliforms ◽  
Commelina Benghalensis ◽  
Treated Effluent

AbstractThe purification of the primary treated domestic sewage was performed in the present study through the horizontal sub-surface flow constructed wetland (CW) of 10 × 3.5 m dimension. The study was performed using three setups of CW 1 (Unplanted CW), CW 2 (CW planted with macrophyte Typha latifolia), and CW 3 (CW planted with two species of macrophyte T. latifolia and Commelina benghalensis). The purification experiments were performed by converting one type of CW into the other form sequentially, i.e., CW 1 was built first and after the experiments, it was converted into CW 2 and then CW 3. The CW was filled with a layer of coarse and fine gravel of 70 cm depth as filter media in 1:2 ratio. Each set of wetland was operated for 3 months (12 wk) during which the treatment performance of wetlands for basic physicochemical parameters was evaluated. The CW was operated in continuous mode at an average hydraulic loading rate of 250 L h− 1 and the treated effluent was analysed twice every week at four different sampling points having hydraulic retention times (HRT) of 12, 24, 36 and 48 h for important sewage quality parameters All the three setups of CW were able to clean the primary treated sewage significantly. Among the three sets of wetlands used, CW 3 was the best performer removing 79, 77, 79, 79, and 78% of biochemical oxygen demand, chemical oxygen demand, nitrate, ammonia, and phosphate respectively in 48 h HRT. Among the three sets of wetlands, the CW 3 removed the highest percent of total coliforms, fecal coliforms, and E. coli as 64, 61 and 52% respectively.

Study on the Surface Flow Constructed Wetland Wastewater Treatment of Furfural Wastewater

2011 ◽  
Vol 281 ◽  
pp. 233-236
Author(s):  
Ju Wei Peng ◽  
Xiang Kui Han
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Constructed Wetland ◽  
Ph Value ◽  
Removal Rate ◽  
Surface Flow ◽  
Treated Wastewater ◽  
Wetland Treatment ◽  
Cod Removal Rate ◽  
Research Show

According to the characteristics of furfural wastewater, by production enterprises located in low-lying saline land transformed into a surface flow constructed wetlands, the waste water in the wetland approach to natural consumption, no efflux, treated waste water equal to the wetland wastewater by natural evaporation, plant transpiration and plant storage Volume. Research show that, after wetland treatment the wastewater COD removal rate to an average of 94%, TN removal rate to an average of 65%, PH value of treated wastewater is 6.22, the use of surface flow constructed wetland wastewater treatment is feasible ecological processing technology for furfural.

scholarly journals Removal behaviour of residual pollutants from biologically treated palm oil mill effluent by Pennisetum purpureum in constructed wetland

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Farhana Aziz Ujang ◽  
Ahmad Muhaimin Roslan ◽  
Nurul Atiqah Osman ◽  
Ashreen Norman ◽  
Juferi Idris ◽  
...  
Keyword(s):  
Palm Oil ◽  
Constructed Wetland ◽  
Surface Flow ◽  
Pollutant Removal ◽  
Palm Oil Mill Effluent ◽  
Pennisetum Purpureum ◽  
Quality Level ◽  
Wetland Soil ◽  
Treated Effluent ◽  
Palm Oil Mill

AbstractThe reason for such enormous efforts in palm oil mill effluent research would be what has been singled out as one of the major sources of pollution in Malaysia, and perhaps the most costly and complex waste to manage. Palm oil mill final discharge, which is the treated effluent, will usually be discharged to nearby land or river since it has been the least costly way to dispose of. Irrefutably, the quality level of the treated effluent does not always satisfy the surface water quality in conformity to physicochemical characteristics. To work on improving the treated effluent quality, a vertical surface-flow constructed wetland system was designed with Pennisetum purpureum (Napier grass) planted on the wetland floor. The system effectively reduced the level of chemical oxygen demand by 62.2 ± 14.3%, total suspended solid by 88.1 ± 13.3%, ammonia by 62.3 ± 24.8%, colour by 66.6 ± 13.19%, and tannin and lignin by 57.5 ± 22.3%. Heat map depicted bacterial diversity and relative abundance in life stages from the wetland soil, whereby bacterial community associated with the pollutant removal was found to be from the families Anaerolineaceae and Nitrosomonadaceae, and phyla Cyanobacteria and Acidobacteria.

Combining UASB technology and constructed wetland for domestic wastewater reclamation and reuse

2003 ◽  
Vol 3 (4) ◽  
pp. 201-208 ◽  
Author(s):  
M.A. El-Khateeb ◽  
F.A. El-Gohary
Keyword(s):  
Constructed Wetland ◽  
Subsurface Flow ◽  
Typha Latifolia ◽  
Domestic Wastewater ◽  
Surface Flow ◽  
Planting Density ◽  
Uasb Reactor ◽  
Organic Loading Rate ◽  
Anaerobic Sludge ◽  
Wastewater Reclamation

The enhancement of water quality by constructed wetland systems is increasingly being employed throughout the world. For this study two treatment schemes consisting of an Up-flow Anaerobic Sludge Blanket (UASB) reactor followed by either subsurface flow (SSF) or free surface flow (FSF) constructed wetlands have been investigated. The common macrophyte in Egypt Typha latifolia (cattail) was used at a planting density of three rhizomes/m2. To evaluate the role of plants in the treatment process, an unplanted gravel bed identical to the SSF unit was operated as control. During the study period, the wetlands were fed with the UASB effluent at an organic loading rate ranging from 17.3 to 46.8 kg BOD5/ha·d (55.1 to 134.6 kgCOD/ha·d). Effectiveness of the system for the removal of key constituents (COD, BOD, TSS, nutrients and FC) has been investigated. The results showed that, the level of CODtot, and TSS in the final effluent of SSF was lower than that of FWS. Subsurface flow wetland has demonstrated higher overall efficiency than the unplanted control. FC reduction reached 4 log units. Further studies are on-going to optimize the wetland design under local environmental conditions.

Potential Use of Aquatic Macrophytes to Enhance the Treatment of Septic Tank Liquids

1999 ◽  
Vol 40 (3) ◽  
pp. 225-232 ◽  
Author(s):  
S. Perdomo ◽  
C. Bangueses ◽  
J. Fuentes
Keyword(s):  
Aquatic Macrophytes ◽  
Typha Latifolia ◽  
Correlation Coefficients ◽  
Statistical Characteristics ◽  
Septic Tank ◽  
Conventional System ◽  
Normal Probability ◽  
Complete Treatment ◽  
Floating Macrophyte ◽  
Potential Use

In several urban and suburban areas, the problem of the disposal and treatment of septic tank liquids has not been solved yet. This paper deals with the primary operational evaluation of a conventional system of ponds used at Tarariras, in the Department of Colonia, Uruguay, as well as the potential use of aquatic macrophytes to enhance such treatment. The conventional system was sampled over a period of approximately one month at the end of the summer in order to determine the main parameters. Groups of up to 20 samples were studied to determine the normal distributions. Correlation coefficients were obtained for the normal probability plot between 0.84 and 0.99. The most relevant statistical characteristics were calculated for each parameter. The removal efficiency was 80.0% of BOD5, 58.5% of COD, 75.8% of NH4+-N, 9.5% of PO4−3-P and 38.5% of TSS. At the same time, batch and semi-continuous trials were carried out at bench scale with Eichhornia crassipes (floating macrophyte) and Typha latifolia (emergent macrophyte). The best efficiencies were obtained for the latter, with values of 96.6% of BOD5, 93.0% of COD, 99.6% of NH4+-N, 95.2% of PO4−3-P and 95.5% of TSS. It was concluded that constructed wetlands could be the answer to a more complete treatment process.

Sign in / Sign up

Export Citation Format

Share Document